Bee stings can produce different reactions, ranging from temporary pain and discomfort to a severe allergic reaction. Having one type of reaction doesn't mean you'll always have the same reaction every time you're stung, or that the next reaction will necessarily be more severe.

Mild reaction

Most of the time, bee sting symptoms are minor and include:

• Instant, sharp burning pain at the sting site
• A red welt at the sting area
• Slight swelling around the sting area

In most people, the swelling and pain go away within a few hours.

Moderate reaction

Some people who get stung by a bee or other insect have a bit stronger reaction, with signs and symptoms such as:

• Extreme redness
• Swelling at the site of the sting that gradually enlarges over the next day or two

Moderate reactions tend to resolve over five to 10 days. Having a moderate reaction doesn't mean you'll have a severe allergic reaction the next time you're stung. But some people develop similar moderate reactions each time they're stung. If this happens to you, talk to your doctor about treatment and prevention, especially if the reaction becomes more severe each time.

Severe allergic reaction

A severe allergic reaction (anaphylaxis) to bee stings is potentially life-threatening and requires emergency treatment. A small percentage of people who are stung by a bee or other insect quickly develop anaphylaxis. Signs and symptoms of anaphylaxis include:

• Skin reactions, including hives and itching and flushed or pale skin
• Difficulty breathing
• Swelling of the throat and tongue
• A weak, rapid pulse
• Nausea, vomiting or diarrhea
• Dizziness or fainting
• Loss of consciousness

People who have a severe allergic reaction to a bee sting have a 30 to 60 percent chance of anaphylaxis the next time they're stung. Talk to your doctor or an allergy specialist about prevention measures such as immunotherapy ("allergy shots") to avoid a similar reaction in case you get stung again.

Multiple bee stings

Generally, insects such as bees and wasps aren't aggressive and only sting in self-defense. In most cases, this results in one or perhaps a few stings. In some cases a person will disrupt a hive or swarm of bees and get multiple stings. Some types of bees — such as Africanized honeybees — are more likely than are other bees to swarm, stinging in a group.

If you get stung more than a dozen times, the accumulation of venom may induce a toxic reaction and make you feel quite sick. Signs and symptoms include:

• Nausea, vomiting or diarrhea
• Headache
• A feeling of spinning (vertigo)
• Convulsions
• Fever
• Dizziness or fainting

Multiple stings can be a medical emergency in children, older adults, and people who have heart or breathing problems.

To sting, a bee jabs a barbed stinger into the skin. Bee sting venom contains proteins that affect skin cells and the immune system, causing pain and swelling around the sting area. In people with a bee sting allergy, bee venom can trigger a more-serious immune system reaction.

You're at increased risk of bee stings if:

• You live in an area where bees are especially active or with beehives nearby
• Your work or hobbies require spending time outside

You're more likely to have an allergic reaction to bee stings if you've had an allergic reaction to a bee sting in the past, even if it was minor.

Adults tend to have more-severe reactions than children do and are more likely to die of anaphylaxis than children are.